Antivibration device production method, stopper for antivibration device, and antivibration device

Abstract

Provided are an anti-vibration device manufacturing method, a stopper for an anti-vibration device, and an anti-vibration device all of which prevent easy separation between the stopper and the bracket while improving the ease of fastening the stopper and the bracket together. The anti-vibration device manufacturing method is a method for obtaining the anti-vibration device. The stopper can be formed, by applying a coating agent C, which is configured to be peelable after solidification, to at least a bulging portion ( 12 ) of a positioning protrusion ( 10 ) of the stopper. The anti-vibration device can be formed, by pressing the bulging portion ( 12 ) into a positioning hole A 1 formed in the bracket 5 , so that the bulging portion ( 12 ) is prevented from detaching from the bracket ( 5 ), using the stopper after solidification of the coating agent C.

The invention claimed is: 
     
         1 . An anti-vibration device manufacturing method for obtaining the anti-vibration device including: an anti-vibration body including an inner cylinder, an outer cylinder, and an elastic body connecting the inner cylinder and the outer cylinder; a bracket arranged on one side of the anti-vibration body in an axial direction; and a stopper arranged between the anti-vibration body and the bracket, the anti-vibration device manufacturing method comprising:
 applying a coating agent to at least a bulging portion of a positioning protrusion extending to one side in the axial direction as part of an elastic member provided in the stopper, the coating agent being configured to be peelable after solidification; and   after solidification of the coating agent, pressing the bulging portion of the positioning protrusion into a positioning hole formed in the bracket, so as to prevent the bulging portion from detaching from the bracket.   
     
     
         2 . The anti-vibration device manufacturing method according to  claim 1 , wherein the coating agent is a rust inhibitor. 
     
     
         3 . The anti-vibration device manufacturing method according to  claim 1 , wherein the coating agent is applied to the entire positioning protrusion. 
     
     
         4 . A stopper for an anti-vibration device that is to be used in the anti-vibration device including: an anti-vibration body including an inner cylinder, an outer cylinder, and an elastic body connecting the inner cylinder and the outer cylinder; a bracket arranged on one side of the anti-vibration body in an axial direction; and the stopper arranged between the anti-vibration body and the bracket, the stopper comprising:
 a rigid member having an opening formed therein; and   an elastic member, wherein   the elastic member includes a stopper body configured to cover the rigid member, and a positioning protrusion continuous with the stopper body, and   the positioning protrusion includes a shaft portion extending to one side in the axial direction as part of the stopper body and configured to be able to penetrate a positioning hole formed in the bracket, a bulging portion continuous with an end of the shaft portion so as to be prevented from detaching from the bracket, and a coating portion provided on at least a surface of the bulging portion and configured to be peelable.   
     
     
         5 . The stopper for an anti-vibration device according to  claim 4 , wherein the coating portion is formed of a rust inhibitor. 
     
     
         6 . An anti-vibration device comprising:
 an anti-vibration body including an inner cylinder, an outer cylinder, and an elastic body connecting the inner cylinder and the outer cylinder;   a bracket arranged on one side of the anti-vibration body in an axial direction; and   a stopper arranged between the anti-vibration body and the bracket, wherein   the bracket has a positioning hole formed therein that penetrates in the axial direction,   the stopper includes a rigid member having an opening formed therein, and an elastic member,   the elastic member includes a stopper body configured to cover the rigid member, and a positioning protrusion continuous with the stopper body, and   the positioning protrusion includes a shaft portion extending to one side in the axial direction as part of the stopper body and configured to penetrate the positioning hole, a bulging portion continuous with an end of the shaft portion so as to be prevented from detaching from the bracket, and a coating portion provided on at least a surface of the bulging portion and configured to be peelable.   
     
     
         7 . The anti-vibration device according to  claim 6 , wherein the coating portion is formed of a rust inhibitor. 
     
     
         8 . The anti-vibration device according to  claim 6 , wherein the coating portion is positioned on the surface of the bulging portion that is located on one side in the axial direction. 
     
     
         9 . The anti-vibration device manufacturing method according to  claim 2 , wherein the coating agent is applied to the entire positioning protrusion. 
     
     
         10 . The anti-vibration device according to  claim 7 , wherein the coating portion is positioned on the surface of the bulging portion that is located on one side in the axial direction.